Constraints on surface temperatures 3.4 billion years ago based on triple oxygen isotopes of cherts from the Barberton Greenstone Belt South Africa, and the problem of sample selection

Lowe, D.R., Ibarra, D., Drabon, N., and Chamberlain, C.P. (2020) Constraints on surface temperatures 3.4 billion years ago based on triple oxygen isotopes of cherts from the Barberton Greenstone Belt South Africa, and the problem of sample selection. American Journal of Science, v. 320, p. 790-814. doi: 10.2475/11.2020.02